?
Solved

access active directory for login destop form using C#

Posted on 2006-07-24
4
Medium Priority
?
702 Views
Last Modified: 2008-02-07
i want to make a login desktop form using C#2005 to make the user enter the username and password of the windows xp in this application and this application must check if this username and password valid or not , i give a code from msdn that make me do this but i have aproblem  the code is

using System;
using System.Text;
using System.Collections;
using System.DirectoryServices;


public class LdapAuthentication
{
    private string _path;
    private string _filterAttribute;

    public LdapAuthentication(string path)
    {
        _path = path;
    }

    public bool IsAuthenticated(string domain, string username, string pwd)
    {
        string domainAndUsername = domain + @"\" + username;
        DirectoryEntry entry = new DirectoryEntry(_path, domainAndUsername, pwd);

        try
        {
            //Bind to the native AdsObject to force authentication.
            object obj = entry.NativeObject;

            DirectorySearcher search = new DirectorySearcher(entry);

            search.Filter = "(SAMAccountName=" + username + ")";
            search.PropertiesToLoad.Add("cn");
            SearchResult result = search.FindOne();

            if (null == result)
            {
                return false;
            }

            //Update the new path to the user in the directory.
            _path = result.Path;
            _filterAttribute = (string)result.Properties["cn"][0];
        }
        catch (Exception ex)
        {
            throw new Exception("Error authenticating user. " + ex.Message);
        }

        return true;
    }

    public string GetGroups()
    {
        DirectorySearcher search = new DirectorySearcher(_path);
        search.Filter = "(cn=" + _filterAttribute + ")";
        search.PropertiesToLoad.Add("memberOf");
        StringBuilder groupNames = new StringBuilder();

        try
        {
            SearchResult result = search.FindOne();
            int propertyCount = result.Properties["memberOf"].Count;
            string dn;
            int equalsIndex, commaIndex;

            for (int propertyCounter = 0; propertyCounter < propertyCount; propertyCounter++)
            {
                dn = (string)result.Properties["memberOf"][propertyCounter];
                equalsIndex = dn.IndexOf("=", 1);
                commaIndex = dn.IndexOf(",", 1);
                if (-1 == equalsIndex)
                {
                    return null;
                }
                groupNames.Append(dn.Substring((equalsIndex + 1), (commaIndex - equalsIndex) - 1));
                groupNames.Append("|");
            }
        }
        catch (Exception ex)
        {
            throw new Exception("Error obtaining group names. " + ex.Message);
        }
        return groupNames.ToString();
    }
}



and when i am use it by

            LdapAuthentication ld = new LdapAuthentication("LDAP://rootDSE");
         ld.IsAuthenticated("isasrv", "aaa", "bbb");
which is the first argument is the server name , the seconde is the user name the third is the password
i take exception
The providers deose not support searching and canot search LDAP\\:rootDSE
,pleas help me .




and i am not sure about the active directory path is it true .

note this applcation in the msdn web site to a web application not to desktop application , i want to desktop abblication

thanx

0
Comment
Question by:moodyahmad
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
4 Comments
 
LVL 10

Accepted Solution

by:
prakash_prk earned 1000 total points
ID: 17167494
could u check this plz.

LdapAuthentication ld = new LdapAuthentication("LDAP://isasrv");
ld.IsAuthenticated("isasrv", "aaa", "bbb");

also try the other overload fucntion of DirectoryEntry class as shown in the article.
http://www.codeproject.com/csharp/arbauthentication.asp

regards
prakash
0
 

Author Comment

by:moodyahmad
ID: 17168026
i am using visual studio 2005
0

Featured Post

VIDEO: THE CONCERTO CLOUD FOR HEALTHCARE

Modern healthcare requires a modern cloud. View this brief video to understand how the Concerto Cloud for Healthcare can help your organization.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Introduction This article series is supposed to shed some light on the use of IDisposable and objects that inherit from it. In essence, a more apt title for this article would be: using (IDisposable) {}. I’m just not sure how many people would ge…
Calculating holidays and working days is a function that is often needed yet it is not one found within the Framework. This article presents one approach to building a working-day calculator for use in .NET.
Visualize your data even better in Access queries. Given a date and a value, this lesson shows how to compare that value with the previous value, calculate the difference, and display a circle if the value is the same, an up triangle if it increased…
In this video, Percona Director of Solution Engineering Jon Tobin discusses the function and features of Percona Server for MongoDB. How Percona can help Percona can help you determine if Percona Server for MongoDB is the right solution for …
Suggested Courses
Course of the Month14 days, 15 hours left to enroll

771 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question